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max-dependencies.js
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max-dependencies.js
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import isStaticRequire from '../core/staticRequire'
import docsUrl from '../docsUrl'
const DEFAULT_MAX = 10
const countDependencies = (dependencies, lastNode, context) => {
const {max} = context.options[0] || { max: DEFAULT_MAX }
if (dependencies.size > max) {
context.report(
lastNode,
`Maximum number of dependencies (${max}) exceeded.`
)
}
}
module.exports = {
meta: {
type: 'suggestion',
docs: {
url: docsUrl('max-dependencies'),
},
schema: [
{
'type': 'object',
'properties': {
'max': { 'type': 'number' },
},
'additionalProperties': false,
},
],
},
create: context => {
const dependencies = new Set() // keep track of dependencies
let lastNode // keep track of the last node to report on
return {
ImportDeclaration(node) {
dependencies.add(node.source.value)
lastNode = node.source
},
CallExpression(node) {
if (isStaticRequire(node)) {
const [ requirePath ] = node.arguments
dependencies.add(requirePath.value)
lastNode = node
}
},
'Program:exit': function () {
countDependencies(dependencies, lastNode, context)
},
}
},
}